Design for High Frequency Adjustment Module in MPEG-4 HEAAC Encoder Based on Linear Prediction Method

Hsu HW, Lee WC, Liu CM, Yang YC. Design for High Frequency Adjustment Module in MPEG-4 HEAAC Encoder Based on Linear Prediction Method. In: AES Convention 120. Audio Engineering Society; 2006. Paper 6755. Available from: https://aes.org/publications/elibrary-page/?id=13559

@inproceedings{Hsu2006_13559,
  author = {Hsu, Han-Wen and Lee, Wen-Chieh and Liu, Chi-Min and Yang, Yung-Cheng},
  title = {{Design for High Frequency Adjustment Module in MPEG-4 HEAAC Encoder Based on Linear Prediction Method}},
  booktitle = {AES Convention 120},
  note = {Paper 6755},
  year = {2006},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=13559}
}

TY  - CPAPER
TI  - Design for High Frequency Adjustment Module in MPEG-4 HEAAC Encoder Based on Linear Prediction Method
AU  - Hsu, Han-Wen
AU  - Lee, Wen-Chieh
AU  - Liu, Chi-Min
AU  - Yang, Yung-Cheng
T2  - AES Convention 120
M1  - Paper 6755
PY  - 2006
DA  - 2006/05/06
UR  - https://aes.org/publications/elibrary-page/?id=13559
PB  - Audio Engineering Society
LA  - en
AB  - High frequency adjustment module is the kernel module of spectral band replication (SBR) in MPEG-4 HE-AAC. The objective of high frequency adjustment is to recover the tonality of reconstructed high frequency. There are two crucial issues, the accurate measurement of tonality and the decision of shared control parameters. Control parameters, which are extracted according to signal tonalities, will be used to determine gain control and energy level of additional components in decoder part. In other words, the quality of the reconstructed signal will be directly related to the high frequency adjustment module. In this paper, an efficient method based on Levinson-Durbin algorithm is proposed to measure the tonality by linear prediction approach with adaptive orders to fit the different subband contents. Furthermore, the artifact due to the sharing of control parameter is investigated and the efficient decision criterion of control parameter is proposed.
ER  -